Wrench



(No Model.)

J. M. IVERSON.

WRENCH. v

No. 465,272. Patented Dec. 15,1891.

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UNITED STATES PATENT OFFICE.

JOHN M. IVERSON, OF VORTHING, SOUTH DAKOTA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 465,272, dated December15, 1891.

Application filed April 28, 1891. Serial No. 390.766. (No model.)

To all whom it may concern.-

Be it known that I, JOHN M. IVERSON, a citizen of the United States,residing at Worthing, in the county of Lincoln and State of SouthDakota, have invented certain new and useful Improvements in Wrenches;and I do hereby declare the following to be a full, clear, and'exactdescription of the invention, such as will enable others skilled in theartto which it appertains to make and use the same.

The invention relates to wrenches which are provided with sliding jaws;and it consists in the improvement hereinafter described, and pointedout in the claim.

Figures 1 and2 of the drawings are side elevations, partly in section,the former showing the sliding jaw locked, so that it cannot move back,while the latter shows the same jaw held so thatit can be slid backwardor forward; and Fig. 3 is a detail view of the yoke, showingitsconstruction as seen from the front or rear thereof.

In the drawings, A represents the handle, arranged on the bar a, whichcarries at its other end the fixed jaw E. On this bar a is looselyfitted the sliding jaw B, through whose apertures 19 b the bar has beenpassed before the handle was put on, and held in place against ashoulder of the bar by a nut and washer a a in the usual and well-knownway,

0 is a yoke having the shank c, rectangular hole 0' to fit thesimilarly-shaped bar a, and the pivotal edge 0 which bites on the bottomof bar a. Between this yoke and the part B of the sliding jaw B, Iarrange on the bar a the spiral spring D, which normally presses theyoke into a diagonal position, as shown in Fig. 1 of the drawings, so asto lock the jaw on the bar a. By pressing the yoke with the hand, asshown in Fig-2 of the draw ings, so as to bring the yoke at right anglesto the bar a, the jaw B may be freely slid back and forth. In order thatthe yoke may be used in this way, I make the jaw B, with the parts B Brespectively apertured and constructed to sit at right angles to the bara and connect them by an arch B in which I make a vertical hole bthrough which passes the shank c of the yoke. This hole b has theinclined rear wall a and the perpendicular front wall a so that when theshankis made to bear against the rearwardly-inclined wall 12 the jaw Bis locked to the bar; but when it is forced by hand against the tensionof spring D to rest against the perpendicular front wall 12 the jaw isloose on bar a and free to move or be moved in either direction. It willreadily be seen how convenient it is to move the jaw up in close contactwith a nut or other object which is to be turned and then hold the nutwhile the yoke 1s let go. This gives an automatic look from which thejaw is not liable to slip under any ordinary circumstances. I

Having thus described all that is necessary to a-full understanding ofmy invention, what I claim as new, and desire to protect by LettersPatent, is- I In a wrench, the combination, with the tired jaw E, havingbar a, of the sliding jaw B, having two parts B B through which said barpasses and connected by an arch B having the hole 6 the yoke 0, having ashank c, which presses either against a front perpendicular wall b or a-rearwardly-inclined wall I) of the hole b and a spiral spring 1),arranged between the yoke and the part B of the jaw B, as and for thepurpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN M. IVERSON. Witnesses:

MATH HANSON, GEO. OLSON.

